The Talmud and early midrashic collections preserve rabbinic mishlei, proverbs, in loose clusters — one-line teachings meant to be memorized and turned over slowly. Here is a sampling from one such list.
On marriage: "I never call my wife 'wife.' I call her beiti — 'my home' — for she is the one who makes my home."
On restraint: One who possesses both a knowledge of God and a knowledge of his fellow man will not easily fall into sin. The first keeps him humble; the second keeps him honest.
On the purpose of Torah: The Torah was given to establish peace. If a teaching of Torah increases enmity in the world, you are probably teaching it wrong.
On property: He who wrongs his fellow even in so small a coin as a perutah is as wicked as one who takes a life. There is no quantity of theft small enough to be harmless.
On anger: One who raises his hand against his fellow in passion is already a sinner, even if he never strikes. And one who surrenders to passion is, the rabbis say, as guilty as an idolater — for whatever governs you in that moment is the god you truly serve.
On false piety: "Do not befriend the man who wears the cloak of a saint to cover the deformities of a fool." A robe can hide a broken soul only from strangers.
On hospitality: Welcoming guests is as great a mitzvah as the study of Torah. One is the body of the other.
On temptation: Rabbi Yehudah said, "Never place yourself in the way of temptation. Even King David could not resist it." If the sweet singer of Israel could fall, who among us should walk near the cliff edge just to see the view?